Lennox LI018CI-230P432 Owner's Manual page 34

Installation of outdoor unit
Step four: connect indoor and outdoor pipes
1. Remove the screw cap of valve and
aim the pipe joint at the bellmouth of
pipe.
liquid
valve
2. Pretightening the union nut with
hand.
pipe joint
1. Remove the wire clip; connect the power connection wire and signal control
wire (only for cooling and heating unit) to the wiring terminal according to the
color; fix them with screws.
lock nut
Finish
conduit
liquid pipe
gas pipe
gas valve
union nut
09 12K
(for some model):
N(1) 2 3
L1 L2
L2
L1
POWER
N(1) 2 3
Indoor unit connection
15 18 24K:
N(1) 2 3 L1 L2 G
green white red black white green
(yellow- (blue) black (brown) (brown) (blue) (yellow-
green) green)
L1 L2
Indoor unit connection
POWER
3. Tighten the union nut with torque
wrench by referring to the sheet
below.
Hex nut diameter Tightening torque
Φ 6
Φ 9.52
Φ 12
Φ 16
Φ 19
09 12K(for some model):
N(1) 2 3 L N
N(1) 2 3
Indoor unit connection
09 12K(for some model):
N(1) 2 3 L
green white red black
(yellow- (blue) black (brown) (brown)
green)
L
Indoor unit connection
POWER
31
(N . m)
15~20
30~40
45~55
60~65
70~75
09K(for some model):
N(1)
2 3
L1 L2
N
L
POWER
white
green
red
black
(blue) (brown) (yellow-
green)
Indoor unit connection
18 24K(for some model):
N(1) 2 3
N
white green
(blue) (yellow-
green)
N N(1) 2 3
Indoor unit connection
green
white
black
(blue) (yellow-
(brown)
green)
L1 L2
POWER
L1 L2 G
L2
L1
POWER